46 lines
1.4 KiB
HTML
46 lines
1.4 KiB
HTML
<html>
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<script src="../../resources/js-test-pre.js"></script>
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<body>
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<div id="container" style="overflow: auto; width: 500px; height: 500px">
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<div style="height: 5000px; width: 5000px;"></div>
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</div>
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<script>
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description('Checks that the scroll event fires on elements asychronously and only once.');
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var eventCount = 0;
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var doneTimeout;
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function scrollHandler(event)
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{
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eventCount++;
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if (eventCount == 1) {
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debug('Scroll event bubbles: ' + event.bubbles);
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var container = document.getElementById('container');
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var scrollX = container.scrollLeft;
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var scrollY = container.scrollTop;
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testPassed('Scroll position: (' + scrollX + ', ' + scrollY + ')');
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// Don't call notifyDone straight away, in case there's another scroll event coming.
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doneTimeout = setTimeout(finishJSTest, 100);
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} else {
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clearTimeout(doneTimeout);
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testFailed('Scroll handler was invoked ' + eventCount + ' times');
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finishJSTest();
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}
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}
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onload = function()
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{
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var container = document.getElementById('container');
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container.addEventListener('scroll', scrollHandler, false);
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container.scrollTop = 100;
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if (eventCount > 0) {
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testFailed('Scroll event fired synchronously');
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finishJSTest();
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}
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container.scrollTop = 200;
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}
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var jsTestIsAsync = true;
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</script>
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<script src="../../resources/js-test-post.js"></script>
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</body>
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</html> |